Vector_with_algorithm_lambda_transform

Vector with algorith ,lambda transform.
https://github.com/urshail/testGit/blob/master/vector_with_ALGO

#include <iostream>

#include <algorithm>

#include <vector>

#include <iterator>

#include <fstream>

//using namespace std;

using std::endl;

using std::cin;

using std::cout;

using std::copy;

using std::vector;

using std::istream_iterator;

using std::ostream_iterator;

using std::fstream;



//used for transform

bool check_odd(int a)

{

          return a%2!=0;

}





int myTransform(int a)

{

          return a+1000;

}

int main() {

  vector<int> array;

            //array.resize(5); //resize req for array.begin with cin

            //int i,count,tmp;

  cout << "ENter number terminated by ctrl+D" << endl;

            //copy(istream_iterator<int> (cin),istream_iterator<int>(),array.begin());



#define MY_TEST

#ifdef MY_TEST

    fstream istreamObj("test.txt");

#else

    istream& istreamObj(cin);

#endif



  copy(istream_iterator<int> (istreamObj),istream_iterator<int>(),back_inserter(array));

            //while ( cin >> tmp)

            //  array[count++]=tmp;

            //for(i=0;i<5;i++)

            //  cin>>array[i];

  copy(array.begin(),array.end(),ostream_iterator<int>(cout," "));

  cout<<endl;



  sort(array.begin(),array.end());

  cout<<endl<<"after sort"<<endl;

  copy(array.begin(),array.end(),ostream_iterator<int>(cout," "));

              /*for(i=0;i<count;i++)

                          cout<<array[i]<<" ";*/

//transform

//modify arry and copy to another vector

  vector<int> modVec;

  transform(array.begin(),array.end(),back_inserter(modVec),myTransform);

  cout<<"after transform of vector with my_ransform"<<endl;

  copy(modVec.begin(),modVec.end(),ostream_iterator<int>(cout," "));

  cout<<endl;                          



// Lambda

  if ( any_of( array.begin(),array.end(),[](int x){ return x==5;} ) )

        cout<<endl<<"one value in array is 5"<<endl;



  auto even = [](int x)         {               return x%2==0;          };

  cout<<endl<<"no of even value in vector is "<<count_if(array.begin(),array.end(), even )<<endl;





  cout<<endl<<"no of odd value in vector is "<<count_if(array.begin(),array.end(), check_odd )<<endl;

  cout<<endl;







        return 0;

}